January weather forecast
Portsmouth, Dominica

Portsmouth, Dominica greets the year with considerably wet weather in January. This significant rainfall can create a distinctly humid atmosphere. On average, precipitation amounts to 144mm (5.67") across 18 days. Maritime influences result in mild sea temperatures, providing a soft and enjoyable environment for water activities. Notably, the level of rainfall decreases as the month progresses into February.

Temperature

With its high average temperature of 28°C (82.4°F) and a low of 21°C (69.8°F), January is regarded as the coldest month.

Rainfall

In Portsmouth, during January, the rain falls for 18 days and regularly aggregates up to 144mm (5.67") of precipitation. Throughout the year, in Portsmouth, there are 214 rainfall days, and 2252mm (88.66") of precipitation is accumulated.

Sea temperature

In Portsmouth, in January, the average water temperature is 27.1°C (80.8°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in January is 11h and 20min.
On the first day of January, sunrise is at 06:32 and sunset at 17:45. On the last day of the month, sunrise is at 06:35 and sunset at 18:02 AST.

Sunshine

The average sunshine in January is 7h.

UV index

The average daily maximum UV index in January is 9. A UV Index value of 8 to 10 symbolizes a very high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 9 during January, leads to the following recommendations:
Prioritize protection; rapid damage can occur to unprotected eyes and skin. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. One must apply and reapply generously an SPF 30+ broad-spectrum sunscreen every two hours or after an outdoor workout or swim. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.